Watch a 3D-printed magnetic critter fold and move all by itself

时间：2019-03-13 11:07:03166网络整理admin

By Leah Crane It’s like origami, but hands-free. Magnetic microparticles can be mixed into rubber to make 3D printed shapes that fold, morph, and move in the presence of a magnetic field. Xuanhe Zhao at the Massachusetts Institute of Technology and his colleagues made these shapes using silicone rubber infused with magnetic microparticles. They modified the nozzle of a 3D printer by surrounding it with coils of wire that act as an electromagnet. When the rubber is extruded,